It should be removed regularly by a dentist or dental hygienist; if neglected, it can cause bacteria to lodge between the gums and the teeth, causing gum infection, dental caries, loosening of the teeth, and other disorders. Called also tartar. gastric calculus gastrolith. intestinal calculus enterolith. lung calculus a hard mass or concretion formed in the bronchi around a small center of inorganic material, or from calcified portions of lung tissue or adjacent lymph nodes. Called also pneumolith.
1 Second, your graduation announcement should include the important details of who, what, when, where, and why. 2  This information lets the recipient know what they need to do and by when. 3  If your graduation announcement includes an invitation, RSVP information should be included.
While it is important to allow your family and friends an appropriate amount of time to acknowledge your graduation in their own way, it is best for them to receive your announcement at least two weeks ahead of time. Your mailing list may consist of recipients who have impacted your life in a number of ways.